Abstract

Background The studywas done to determinethe duration of postoperative analgesia brought on by incorporating intra-articular Bupivacaine with Dexmedetomidine as an adjuvant following knee arthroscopies. Methods A prospective randomized control study was conducted on 60 patients of ASA classes I and II, between the ages of 20 and 60 years, undergoing arthroscopic surgeries of the knee under spinal anaesthesia. The patients were divided into group B and group D, each containing 30 patients. The participants in group B were administered Inj. Bupivacaine 0.5% 19 mL + 1 mL of normal saline intra-articularly and the participants in group D were administered Inj. Bupivacaine 0.5% 19 mL, Inj. Dexmedetomidine 1 μg/kg and normal saline post-surgery. Thenumber of analgesics used in the first 24 hours, pain levels using the visual analogue scale and the timing of administration of the first analgesic dose between the two study groups were evaluated. Results In comparison to the Bupivacaine group, the Dexmedetomidine group required fewer rescue analgesics. The visual analogue visual scale score in group B at four hours and six hours was 2.7 ± 1.39 and2.9 ± 1.03, respectively, and in group D at four hours and six hours was 1.9 ± 1.09 and 1.83 ± 0.91. The visual analoguescale scores at these times were statistically significant. The visual analogue scale scores at 12 hours and 24 hours were statistically not significant. Conclusion Dexmedetomidine added to Intra-articular Bupivacaine provides an increased duration of postoperative analgesia in patients undergoing arthroscopic surgeries of the knee. The combination offers improved analgesia and reduces the overall dosage of rescue analgesics needed without causing substantial side effects.

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